diff --git a/misc/config_tools/configurator/packages/configurator/src/pages/Config/ConfigForm.vue b/misc/config_tools/configurator/packages/configurator/src/pages/Config/ConfigForm.vue
index 2ce959adc..661a76c28 100644
--- a/misc/config_tools/configurator/packages/configurator/src/pages/Config/ConfigForm.vue
+++ b/misc/config_tools/configurator/packages/configurator/src/pages/Config/ConfigForm.vue
@@ -93,7 +93,7 @@ export default {
             'ui:field': Input,
           },
           "gpu": {
-            "ui:title": "Virtio GPU device",
+            "ui:title": "",
             "ui:field": GPU,
           },
         },
diff --git a/misc/config_tools/configurator/packages/configurator/src/pages/Config/ConfigForm/CustomWidget/Virtio/GPU.vue b/misc/config_tools/configurator/packages/configurator/src/pages/Config/ConfigForm/CustomWidget/Virtio/GPU.vue
index 7720c632c..578b98cc7 100644
--- a/misc/config_tools/configurator/packages/configurator/src/pages/Config/ConfigForm/CustomWidget/Virtio/GPU.vue
+++ b/misc/config_tools/configurator/packages/configurator/src/pages/Config/ConfigForm/CustomWidget/Virtio/GPU.vue
@@ -1,8 +1,8 @@
 <template>
   <div><br><b>Virtio GPU device</b></div>
   <div><br><span v-html="this.GPUDescription" style="color: rgb(153, 153, 153)"></span></div>
-  <div class="virtio_gpu" v-if="defaultVal && defaultVal.displays.display.length !== 0">
-    <div class="virtio_gpu_demo">
+  <div class="virtio_gpu" v-if="defaultVal && defaultVal.length>0">
+    <div class="virtio_gpu_demo" v-for="(virtio_gpu, index) in defaultVal">
       <b style="margin-bottom: 2rem">Virtual displays</b>
       <b-row class="align-items-center my-2 mt-4">
         <b-col md="2">
@@ -17,21 +17,21 @@
           </label>
         </b-col>
         <b-col md="4">
-          <b-form-select v-model="defaultVal.display_type" :options="GPUDisplayType"/>
+          <b-form-select v-model="virtio_gpu.display_type" :options="GPUDisplayType"/>
         </b-col>
       </b-row>
-      <div class="align-items-center my-2 mt-4" v-if="defaultVal.display_type === 'Window'"
-           v-for="(window_display, index) in defaultVal.displays.display">
+      <div class="align-items-center my-2 mt-4" v-if="virtio_gpu.display_type === 'Window'"
+           v-for="(window_display, window_index) in virtio_gpu.displays.display">
         <div style="float: left; text-indent: 2em;">
-          <b>Display {{ index + 1 }}</b>
+          <b>Display {{ window_index + 1 }}</b>
         </div>
         <div class="ToolSet" style="float: right;">
-          <div @click="removeDisplay(defaultVal.displays.display, index)">
+          <div @click="removeDisplay(virtio_gpu.displays.display, window_index)">
             <Icon size="18px">
               <Minus/>
             </Icon>
           </div>
-          <div @click="addWindowDisplay(defaultVal.displays.display, index)">
+          <div @click="addWindowDisplay(virtio_gpu.displays.display, window_index)">
             <Icon size="18px">
               <Plus/>
             </Icon>
@@ -90,18 +90,18 @@
         </div>
       </div>
 
-      <div class="align-items-center my-2 mt-4" v-else-if="defaultVal.display_type === 'Full screen'"
-           v-for="(fullScreen_display, index) in defaultVal.displays.display">
+      <div class="align-items-center my-2 mt-4" v-else-if="virtio_gpu.display_type === 'Full screen'"
+           v-for="(fullScreen_display, fullScreen_display_index) in virtio_gpu.displays.display">
         <div style="float: left; text-indent: 2em;">
           <b>Display {{ index + 1 }}</b>
         </div>
         <div class="ToolSet" style="float: right;">
-          <div @click="removeDisplay(defaultVal.displays.display, index)">
+          <div @click="removeDisplay(virtio_gpu.displays.display, fullScreen_display_index)">
             <Icon size="18px">
               <Minus/>
             </Icon>
           </div>
-          <div @click="addFullScreenDisplay(defaultVal.displays.display, index)">
+          <div @click="addFullScreenDisplay(virtio_gpu.displays.display, fullScreen_display_index)">
             <Icon size="18px">
               <Plus/>
             </Icon>
@@ -213,10 +213,13 @@ export default {
       display.splice(index, 1)
     },
     removeVirtioGPU() {
-      this.defaultVal = null
+      this.defaultVal = []
     },
     addVirtioGPU() {
-      this.defaultVal = {
+      if (!_.isArray(this.defaultVal)) {
+        this.defaultVal = []
+      }
+      this.defaultVal.splice(1, 0, {
         "display_type": "",
         "displays": {
           "display": [
@@ -228,7 +231,7 @@ export default {
             }
           ]
         }
-      }
+      })
     }
   }
 }
diff --git a/misc/config_tools/launch_config/launch_cfg_gen.py b/misc/config_tools/launch_config/launch_cfg_gen.py
index c6cd581a6..33e16b5f7 100755
--- a/misc/config_tools/launch_config/launch_cfg_gen.py
+++ b/misc/config_tools/launch_config/launch_cfg_gen.py
@@ -374,7 +374,7 @@ def generate_for_one_vm(board_etree, hv_scenario_etree, vm_scenario_etree, vm_id
             script.add_virtual_device("virtio-blk", options=os.path.join(f"${{{var}}}", rootfs_img))
             script.add_deinit_command(f"unmount_partition ${{{var}}}")
 
-    for gpu_etree in eval_xpath_all(vm_scenario_etree, ".//virtio_devices/gpu"):
+    for gpu_etree in eval_xpath_all(vm_scenario_etree, ".//virtio_devices/gpu[./display_type]"):
         display_type = eval_xpath(gpu_etree, "./display_type[text() != '']/text()")
         params = list()
         for display_etree in eval_xpath_all(gpu_etree, "./displays/display"):
diff --git a/misc/config_tools/schema/checks/virtio_devices.xsd b/misc/config_tools/schema/checks/virtio_devices.xsd
index 60ccef0e6..2bfe1a182 100644
--- a/misc/config_tools/schema/checks/virtio_devices.xsd
+++ b/misc/config_tools/schema/checks/virtio_devices.xsd
@@ -23,7 +23,17 @@
   </xs:assert>
 
   <xs:assert test="every $vm in /acrn-config/vm[./virtio_devices/gpu[display_type = 'Window']] satisfies
-                   $vm/virtio_devices/gpu/displays/display/window_resolutions/text() != ''
+                   (count($vm//window_resolutions) = count($vm//horizontal_offset)
+                   and count($vm//window_resolutions) = count($vm//vertical_offset)
+                   and count($vm//horizontal_offset) = count($vm//vertical_offset))
+                   ">
+    <xs:annotation acrn:severity="error" acrn:report-on="$vm">
+      <xs:documentation>VM "{$vm/name}": every display's window resolution, horizontal offset and vertical offset are required.</xs:documentation>
+    </xs:annotation>
+  </xs:assert>
+
+  <xs:assert test="every $vm in /acrn-config/vm[./virtio_devices/gpu[display_type = 'Window']] satisfies
+                   $vm/virtio_devices/gpu/displays/display//window_resolutions/text() != ''
                    ">
     <xs:annotation acrn:severity="error" acrn:report-on="$vm">
       <xs:documentation>VM "{$vm/name}": window resolution is required for "window" virtual display.</xs:documentation>
@@ -31,7 +41,7 @@
   </xs:assert>
 
   <xs:assert test="every $vm in /acrn-config/vm[./virtio_devices/gpu[display_type = 'Window']] satisfies
-                   $vm/virtio_devices/gpu/displays/display/horizontal_offset/text() != ''
+                   $vm/virtio_devices/gpu/displays/display//horizontal_offset/text() != ''
                    ">
     <xs:annotation acrn:severity="error" acrn:report-on="$vm">
       <xs:documentation>VM "{$vm/name}": horizontal offset (pixels) is required for "window" virtual displays.</xs:documentation>
@@ -39,11 +49,10 @@
   </xs:assert>
 
     <xs:assert test="every $vm in /acrn-config/vm[./virtio_devices/gpu[display_type = 'Window']] satisfies
-                     $vm/virtio_devices/gpu/displays/display/vertical_offset/text() != ''
+                     $vm/virtio_devices/gpu/displays/display//vertical_offset/text() != ''
                      ">
     <xs:annotation acrn:severity="error" acrn:report-on="$vm">
-      <xs:documentation>VM "{$vm/name}" support 2 virtual windows at most. 
-Remove some of the virtual displays so that the total number does not exceed that limit.</xs:documentation>
+      <xs:documentation>VM "{$vm/name}": vertical offset (pixels) is required for "window" virtual displays.</xs:documentation>
     </xs:annotation>
   </xs:assert>
 
diff --git a/misc/config_tools/schema/config.xsd b/misc/config_tools/schema/config.xsd
index 19c7dfd51..d4b4f606e 100644
--- a/misc/config_tools/schema/config.xsd
+++ b/misc/config_tools/schema/config.xsd
@@ -478,7 +478,7 @@ argument and memory.</xs:documentation>
       </xs:annotation>
       <xs:complexType>
         <xs:all>
-          <xs:element name="gpu" type="VirtioGPUConfiguration" minOccurs="0">
+          <xs:element name="gpu" type="VirtioGPUConfiguration" minOccurs="0" maxOccurs="1">
             <xs:annotation acrn:title="Virtio GPU device" acrn:views="basic">
               <xs:documentation>The virtio GPU device presents a GPU device to the VM.
 This feature enables you to view the VM's GPU output in the Service VM.</xs:documentation>